WO2018154985A1 - 船舶 - Google Patents

船舶 Download PDF

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Publication number
WO2018154985A1
WO2018154985A1 PCT/JP2018/000372 JP2018000372W WO2018154985A1 WO 2018154985 A1 WO2018154985 A1 WO 2018154985A1 JP 2018000372 W JP2018000372 W JP 2018000372W WO 2018154985 A1 WO2018154985 A1 WO 2018154985A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
ship
flow rate
outside
gas flow
Prior art date
Application number
PCT/JP2018/000372
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
正広 天野
浩市 松下
Original Assignee
三菱重工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to KR1020197021493A priority Critical patent/KR102131589B1/ko
Priority to CN201880008540.0A priority patent/CN110267872B/zh
Publication of WO2018154985A1 publication Critical patent/WO2018154985A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/32—Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/02—Ventilation; Air-conditioning
    • B63J2/08—Ventilation; Air-conditioning of holds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/08—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for reducing temperature in combustion chamber, e.g. for protecting walls of combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50—Control or safety arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport

Definitions

  • the present invention relates to a ship equipped with a facility for supplying inert gas into a storage tank in which fuel such as crude oil is stored.
  • VOC gas gas containing volatile organic compounds
  • VOC gas generated in a crude oil tank has been released into the atmosphere by a vent.
  • VOC gas causes air pollution due to suspended particulate matter, photochemical oxidants, and the like
  • a technique for reliably oxidizing the VOC gas without releasing it into the atmosphere has been proposed (for example, patents).
  • Reference 1 the VOC gas is retained in the furnace for a predetermined time or more and is maintained at a predetermined temperature or more. Further, a technique is disclosed in which the predetermined time and the predetermined temperature are set to values at which the VOC gas is sufficiently oxidized, and even a very low concentration VOC gas is discharged in a sufficiently oxidized state. Yes.
  • the inert gas is supplied into the storage tank.
  • the inert gas exhaust gas generated by an auxiliary boiler is used. The exhaust gas is extracted from the chimney of the auxiliary boiler by an inert gas fan and supplied to the storage tank.
  • the auxiliary boiler generates exhaust gas having a capacity sufficiently larger than the capacity of the inert gas fan, the load on the auxiliary boiler increases, thereby increasing the fuel consumption of the auxiliary boiler. In addition, the power consumption of the boiler combustion air blowing fan also increases.
  • This invention is made
  • a ship according to one embodiment of the present invention includes a storage tank that stores fuel, a boiler, a discharge unit that discharges exhaust gas generated by the boiler to the outside of the ship, and an exhaust gas from an extraction position in the middle of the discharge unit. And an exhaust gas supply unit that supplies the storage tank to the storage tank, and an exhaust gas flow rate control unit that controls the exhaust gas flow rate so that the exhaust gas flow rate flowing outside the ship through the discharge unit becomes 0 or more.
  • the exhaust gas generated in the boiler flows through the discharge part and is discharged to the outside of the ship.
  • the exhaust gas extracted from the extraction position in the middle of the discharge part is guided as an inert gas to the storage tank through the exhaust gas supply part.
  • the exhaust gas flow rate control unit controls the exhaust gas flow rate flowing out of the ship to be 0 or more.
  • the exhaust gas flow rate control unit includes an exhaust gas damper that changes the exhaust gas flow rate flowing outside the ship on the downstream side of the exhaust gas flow at the extraction position.
  • the exhaust gas flow rate that flows from the extraction position to the exhaust gas supply unit is controlled by providing an exhaust gas damper that changes the exhaust gas flow rate that flows to the outside of the ship on the downstream side of the exhaust gas flow at the extraction position. Specifically, if the exhaust gas flow rate flowing to the outside of the ship is reduced by controlling the exhaust gas damper in the closing direction, the exhaust gas flow rate flowing to the exhaust gas supply unit is relatively increased, and the exhaust gas damper is controlled to open to control the outside of the ship. When the exhaust gas flow rate flowing to the exhaust gas is increased, the exhaust gas flow rate flowing to the exhaust gas supply unit is relatively decreased. By changing the opening degree of the exhaust gas damper in this way, it is possible to avoid the backflow of air from the outside of the ship toward the extraction position, and to supply an appropriate amount of exhaust gas to the storage tank.
  • the exhaust gas flow rate control unit includes a pressure sensor that measures the pressure on the extraction position side of the exhaust gas damper and the pressure on the outside of the ship, and the measured value of the pressure sensor Based on this, the opening degree of the exhaust gas damper is controlled so that the pressure on the extraction position side becomes higher than the pressure on the outside of the ship.
  • the exhaust gas damper By controlling the opening degree of the exhaust gas damper so that the pressure on the extraction position side of the exhaust gas damper is higher than the pressure on the outside side of the exhaust gas damper, the exhaust gas flows from the extraction position side to the outside of the ship. Can do.
  • a pressure sensor a pressure sensor may be provided in each of the upstream and downstream of an exhaust gas damper, and the differential pressure gauge which measures the differential pressure between the upstream and downstream of an exhaust gas damper may be provided.
  • the exhaust gas flow rate control unit allows a flow from the extraction position toward the outside of the ship to the downstream side of the exhaust gas flow of the extraction position, and from the outside of the ship A check valve is provided to block the flow toward the extraction position.
  • a check valve is provided on the downstream side of the exhaust gas flow at the extraction position to allow the flow from the extraction position to the outside of the ship and to prevent the flow from the outside of the ship to the extraction position. Thereby, the air flow which goes to the extraction position from the ship outer side can be avoided. Moreover, since it is not necessary to employ
  • a ship 1 includes a hull 2, a bridge 3, a crude oil tank 4 having a plurality of storage units 5 arranged from the bow toward the stern, and an auxiliary boiler 10 that is a marine boiler. It is a tanker.
  • the ship 1 includes a diesel engine as a main engine (not shown), a steam-driven cargo oil pump, a generator, and the like that are used when handling the oil in the storage unit 5.
  • the steam generated in the auxiliary boiler 10 is used, for example, to warm fuel oil (oil having a high viscosity at room temperature such as C heavy oil) used for a diesel engine as a main engine, the auxiliary boiler 10, and other auxiliary machines, Used to move cargo oil pumps or as general purpose steam.
  • warm fuel oil oil having a high viscosity at room temperature such as C heavy oil
  • the auxiliary boiler 10 includes an auxiliary boiler main body 11, a chimney (discharge unit) 12, an inert gas fan (exhaust gas supply unit) 13, a flow meter 14, an inert gas scrubber 15, and a volatile gas fan 16.
  • the auxiliary boiler 10 includes a combustion air fan 17, an exhaust gas damper (exhaust gas flow rate control unit) 18, a differential pressure gauge 19 that measures the differential pressure before and after the exhaust gas damper 18, and the pressure in the auxiliary boiler body 11.
  • the pressure sensor 20 to measure and the control part main body (exhaust gas flow rate control part) 21 which controls the opening degree of the exhaust gas damper 18 are provided.
  • a feed line 22 for feeding the oil 50 to the outside of the ship by a cargo oil pump (not shown) is connected to the predetermined storage unit 5 (the storage unit 5 on the most bow side in the present embodiment). Since each storage part 5 of the crude oil tank 4 is connected in communication, the oil 50 is stored uniformly. In addition, when each storage part 5 is installed independently, the feed line 22 is connected to each storage part 5 in communication.
  • the auxiliary boiler body 11 is provided with a plurality of burners 25 at the top of the furnace 23.
  • the burner 25 is supplied with boiler fuel supplied via a fuel line (not shown) and combustion air introduced by the combustion air fan 17 through the air duct 26.
  • the rotational speed of the combustion air fan 17 is controlled by the control unit main body 21.
  • the auxiliary boiler body 11 includes a water drum 28 provided below the evaporation tube group 27 and a steam drum 29 provided above the evaporation tube group 27.
  • the pressure in the auxiliary boiler body 11, that is, the furnace pressure is measured by the pressure sensor 20.
  • the pressure information measured by the pressure sensor 20 is taken into the control unit main body 21.
  • the control unit main body 21 controls the opening degree of the exhaust gas damper 18 so that the pressure in the furnace 23 does not exceed the set value by calculating the measurement value obtained from the pressure sensor 20.
  • the opening degree of the exhaust gas damper 18 is increased and the pressure in the furnace 23 is lowered.
  • a volatile gas introduction line 30 is connected to the upstream side of the volatile gas fan 16.
  • the volatile gas introduction line 30 is connected to each suction line 31 connected to the upper portion of each storage unit 5. Further, the volatile gas introduction line 30 is connected to the vent line 36 in communication.
  • a volatile gas supply line 37 is connected to the downstream side of the volatile gas fan 16.
  • the volatile gas supply line 37 is connected to the burner 25 in communication.
  • the volatile gas fan 16 sucks volatile gas from each storage unit 5 and sends it to the burner 25.
  • an exhaust gas suction line (exhaust gas supply unit) 38 is connected in communication with the upstream side of the inert gas fan 13.
  • the upstream side of the exhaust gas suction line 38 is connected to an extraction position 39 on the upstream side of the exhaust gas damper 18 in the chimney 12.
  • the downstream side of the inert gas fan 13 is connected to the crude oil tank 4 through a flow meter 14 for measuring the flow rate of the exhaust gas and an inert gas scrubber 15.
  • the measurement value of the flow meter 14 is transmitted to the control unit main body 21.
  • the inert gas scrubber 15 performs a cleaning process to remove soot from the exhaust gas.
  • the exhaust gas subjected to the cleaning process is supplied as an inert gas to the space above the oil 50 in each storage unit 5.
  • the exhaust gas damper 18 is, for example, a butterfly valve attached to the inside of the cylindrical chimney 12.
  • the exhaust gas damper 18 is driven to open and close so as to change the cross-sectional area of the flow path in the chimney 12 by a control signal from the control unit main body 21.
  • the exhaust gas damper 18 is controlled to open and flows to the outside of the boat.
  • the exhaust gas damper 18 may be mechanically connected to an actuator (not shown) having a built-in speed reduction mechanism.
  • the differential pressure gauge 19 for measuring the differential pressure before and after (upstream / downstream) of the exhaust gas damper 18 is installed at a position including the front and rear of the exhaust gas damper 18 in the chimney 12.
  • the measured value of the differential pressure by the differential pressure gauge 19 is transmitted to the control unit main body 21.
  • pressure sensors may be provided on the upstream side and the downstream side of the exhaust gas damper 18, respectively, and the differential pressure may be obtained by taking the difference between these pressure sensors.
  • the control unit main body 21 is an information processing apparatus, and includes, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and a computer-readable storage medium.
  • a series of processes for realizing various functions is stored in a storage medium or the like in the form of a program as an example, and the CPU reads the program into a RAM or the like to execute information processing / arithmetic processing.
  • the program is preinstalled in a ROM or other storage medium, provided in a state stored in a computer-readable storage medium, or distributed via wired or wireless communication means. Etc. may be applied.
  • the computer-readable storage medium is a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like.
  • the control unit body 21 detects the measurement value obtained by the flow meter 14, the measurement value obtained by the differential pressure gauge 19, and the measurement value obtained by the pressure sensor 20. And the control part main body 21 controls the load of the auxiliary boiler 10 so that the furnace pressure in the furnace 23 may not exceed a setting value. Further, the control unit main body 21 is configured so that the measured value obtained by the differential pressure gauge 19 becomes a certain value or more, that is, the pressure on the upstream side of the exhaust gas damper 18 (auxiliary boiler 10 side) is downstream of the exhaust gas damper 18 (ship The opening degree of the exhaust gas damper 18 is controlled to be higher than the pressure on the outside.
  • the control unit main body 21 is configured so that the following equation is established when the capacity of the inert gas fan 13, that is, the air flow rate at the time of constant rotation operation is Q1, and the exhaust gas flow rate flowing from the extraction position 39 to the inert gas fan 13 side is Q2.
  • the opening degree of the exhaust gas damper 18 and the load of the auxiliary boiler 10 are controlled.
  • ⁇ is a numerical value of 1 or more, and is appropriately set from various operating conditions.
  • the control unit main body 21 detects the measurement value obtained from the differential pressure gauge 19 and the measurement value by the pressure sensor 20, and the furnace pressure in the furnace 23 does not exceed the set value.
  • the opening degree of the exhaust gas damper 18 is controlled so that the measured value obtained from the differential pressure gauge 19 becomes a certain value or more.
  • the control part main body 21 controls the opening degree of the exhaust gas damper 18 so that the said Formula (1) may be materialized.
  • the auxiliary boiler 10 is operated so as to generate exhaust gas twice the capacity of the inert gas fan 13, but according to the present embodiment, the inert gas fan 13 is operated.
  • the amount of exhaust gas generated can be reduced to 1.1 to 1.2 times the capacity.
  • the exhaust gas flow rate that flows from the extraction position 39 to the crude oil tank 4 side is controlled by providing an exhaust gas damper 18 that changes the exhaust gas flow rate that flows to the outside of the ship on the downstream side of the exhaust gas flow at the extraction position 39.
  • an exhaust gas damper 18 that changes the exhaust gas flow rate that flows to the outside of the ship on the downstream side of the exhaust gas flow at the extraction position 39.
  • differential pressure gauge 19 is used to control the opening degree of the exhaust gas damper 18 so that the pressure on the extraction position 39 side of the exhaust gas damper 18 is higher than the pressure on the outside of the ship of the exhaust gas damper 18, the exhaust gas is in the extraction position. It is possible to reliably flow from the 39 side to the outside of the ship.
  • the ship 40 according to this modification is different from the ship 1 in that a check valve (exhaust gas flow rate control unit) 41 is attached instead of the exhaust gas damper 18.
  • the check valve 41 is provided on the downstream side of the exhaust gas flow from the extraction position 39.
  • the check valve 41 operates to allow a flow from the bleed position 39 toward the outside of the ship and to prevent a flow from the outside of the ship toward the bleed position 39.
  • the exhaust gas damper 18 and the differential pressure gauge 19 as in the above embodiment are not necessary, and the flow meter 14 can be dispensed with. Further, by adopting a simple configuration of the check valve 41, it is possible to avoid an air flow from the outside of the ship toward the extraction position 39. Further, by using the check valve 41, the valve opening degree control can be made unnecessary.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Treating Waste Gases (AREA)
  • Combustion Of Fluid Fuel (AREA)
PCT/JP2018/000372 2017-02-27 2018-01-10 船舶 WO2018154985A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020197021493A KR102131589B1 (ko) 2017-02-27 2018-01-10 선박
CN201880008540.0A CN110267872B (zh) 2017-02-27 2018-01-10 船舶

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-034937 2017-02-27
JP2017034937A JP6462023B2 (ja) 2017-02-27 2017-02-27 船舶

Publications (1)

Publication Number Publication Date
WO2018154985A1 true WO2018154985A1 (ja) 2018-08-30

Family

ID=63252585

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/000372 WO2018154985A1 (ja) 2017-02-27 2018-01-10 船舶

Country Status (4)

Country Link
JP (1) JP6462023B2 (zh)
KR (1) KR102131589B1 (zh)
CN (1) CN110267872B (zh)
WO (1) WO2018154985A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020144988A1 (ja) * 2019-01-08 2020-07-16 三菱重工業株式会社 舶用ボイラ及び舶用ボイラの改造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001012712A (ja) * 1999-07-01 2001-01-19 Hitachi Chem Co Ltd 炭化室煙道の構造、炭化装置及び炭化方法
JP2007001339A (ja) * 2005-06-21 2007-01-11 Mitsubishi Heavy Ind Ltd 船舶の推進装置における内燃機関廃熱回収プラント
JP2009030897A (ja) * 2007-07-27 2009-02-12 Miura Co Ltd 排ガス再循環ボイラ
WO2011092450A1 (en) * 2010-01-29 2011-08-04 Hammworthy Combustion Engineering Limited Handling hydrocarbon cargoes
JP2012037089A (ja) * 2010-08-04 2012-02-23 Kawasaki Heavy Ind Ltd 熱回収ユニット、排ガスエコノマイザ及び廃熱回収システム
JP2015152238A (ja) * 2014-02-14 2015-08-24 三菱重工業株式会社 舶用ボイラおよび舶用ボイラの運転方法
JP2015158334A (ja) * 2014-02-25 2015-09-03 三菱重工業株式会社 排ガス再循環システム及びそれを備えた船用ボイラ、並びに排ガス再循環方法

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GB1492400A (en) * 1975-07-23 1977-11-16 Hughes & Co Ltd F Inert gas system
JPH06315627A (ja) * 1993-04-30 1994-11-15 Miura Kenkyusho:Kk イナートガス製造装置
KR20130049086A (ko) * 2011-11-03 2013-05-13 현대중공업 주식회사 원유운반선의 불활성가스 공급장치
GB201415623D0 (en) * 2014-09-04 2014-10-22 Linde Ag Prevention of combustion in storage silos
CN205979813U (zh) * 2016-07-29 2017-02-22 北京航天动力研究所 一种处理含尘voc废气的蓄热式焚烧装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001012712A (ja) * 1999-07-01 2001-01-19 Hitachi Chem Co Ltd 炭化室煙道の構造、炭化装置及び炭化方法
JP2007001339A (ja) * 2005-06-21 2007-01-11 Mitsubishi Heavy Ind Ltd 船舶の推進装置における内燃機関廃熱回収プラント
JP2009030897A (ja) * 2007-07-27 2009-02-12 Miura Co Ltd 排ガス再循環ボイラ
WO2011092450A1 (en) * 2010-01-29 2011-08-04 Hammworthy Combustion Engineering Limited Handling hydrocarbon cargoes
JP2012037089A (ja) * 2010-08-04 2012-02-23 Kawasaki Heavy Ind Ltd 熱回収ユニット、排ガスエコノマイザ及び廃熱回収システム
JP2015152238A (ja) * 2014-02-14 2015-08-24 三菱重工業株式会社 舶用ボイラおよび舶用ボイラの運転方法
JP2015158334A (ja) * 2014-02-25 2015-09-03 三菱重工業株式会社 排ガス再循環システム及びそれを備えた船用ボイラ、並びに排ガス再循環方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020144988A1 (ja) * 2019-01-08 2020-07-16 三菱重工業株式会社 舶用ボイラ及び舶用ボイラの改造方法
JP2020112278A (ja) * 2019-01-08 2020-07-27 三菱重工マリンマシナリ株式会社 舶用ボイラ及び舶用ボイラの改造方法
JP7152957B2 (ja) 2019-01-08 2022-10-13 三菱重工マリンマシナリ株式会社 舶用ボイラ及び舶用ボイラの改造方法

Also Published As

Publication number Publication date
JP6462023B2 (ja) 2019-01-30
KR20190090873A (ko) 2019-08-02
CN110267872B (zh) 2021-07-30
CN110267872A (zh) 2019-09-20
KR102131589B1 (ko) 2020-07-08
JP2018140671A (ja) 2018-09-13

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